The average marks scored by Naman and Dhruv are 1085. The average marks scored by Manik and Dhruv are 1015. If Manik scored 658 marks, then the marks scored by Naman are
Answers
Answered by
2
Answer:
798
Step-by-step explanation:
let marks of naman be x , marks of dhruv be y and marks of manik be z
average marks scored by naman and dhruv are 1085
so,(x+y)/2=1085
(x+y)=1085×2
(x+y)=2170 .........(1)
the average marks scored by manik and dhruv are 1015
so,(y+z)/2=1015
(y+z)=1015×2
(y+z)=2030 ........(2)
given, marks scored by manik are 658. thus, z=658
substitute z=658 in equation 2
y+658=2030
y=2030-658
y=1372
substitute y=1372 in equation 1
x+1372=2170
x=2170-1372
x=798
∴marks scored by naman are 798
hope it helps you
Similar questions